View all ATEs: First view "Eiko Talks Life", then "How He Ended Up Here" and have Vivi choose to visit his home.
Then view "Memories By The Water" and then "City People", in which Eiko will receive a Chimera Armlet.

After the first card tournament round, view "Home Sweet Home", then "Good Old Days" and choose, "I won't force it out of you".
Go to the auction house and talk to Freya to have her join you.

If you defeat the champion of the card tournament, you receive a Rebirth Ring.